From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f78.google.com (mail-ot1-f78.google.com [209.85.210.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 632352BDC0F for ; Thu, 18 Dec 2025 20:12:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766088748; cv=none; b=hNuxMDxQWOiXVnsaDgf1x/mpyIshQvJpYHfYgRidLXmPhnM54Evrh7kFb5pi2kyXxXrlfLyaiqSuzbPwFmzHK5XkaTFJ8YrbSOMAOAI3MvdMe6hg1tFueOdmeBTLZ5eN89EUZOoRdsldGNh14q1dJuC1nb2qyAPJywhUMTGvtLs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766088748; c=relaxed/simple; bh=SCmrBCTDFD5ubTjkA56SqENcQgdXvnofAPhlNZPj5ic=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=NlVjC2ly92wqmNJbj7nqB3/IjiP6BxfnY38CMQwhYJLsmraazb+CuyEdlDroRpSGeWP18J78WzW0x41JAzMgVL4byl1rp5BlkDKvWKQh2mvLod73M9KCc+iODTbIuERyppza/zhwh9RuM6GjygbET0FWeW7ZZW8kuzLqAJ35WYU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.210.78 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-ot1-f78.google.com with SMTP id 46e09a7af769-7c7028db074so1938650a34.1 for ; Thu, 18 Dec 2025 12:12:26 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1766088745; x=1766693545; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Tfr7FL5pZakXGk7tny8jsZuMcDvYO9J0q/4MvmwyG2E=; b=YsnaMXQ+Htc2DOOVrnm4wGzriBVdvZkUfcAavjKl/wfuHRaXI7gZ5BrKYjfmt6XsUz aSh61GmAAFbSZeG1sogpEH/xk2hw1LH38ei8MX0jIMjtQ/QVyRIgqVMDGUZbuuYRE/a+ wwrvhPm4Bj4XMPuAMmZOhCecZriByWrKAiOTDcdYXfUuLFeh02OEjsMJttojv78Ty0io cUNVVwC8Ekw9exVBHvxhLvenlji+UpgK3deaG4KnPFhobIxglZLhgjAmZ1JJuFc+A8I6 JhMpi6haYTFJ9/7SzelvascUW6oBqd7znaLHhRMrFthzaAOE17Rk744lrG9bKnSt6N8u XtGg== X-Gm-Message-State: AOJu0YzjbAFzNF1JrrRj/zbpzieE4jfdl2lyiwGjNiL3cQYqj9DKXODk AI6q9bUBL/bliy7B5x2GVWyDXvZiJjq8b1UHUwPTJpB8xU/VIlx5TMaM8i7Z8RNp9hDnltBM92Z mUMzxwSv19+N7Cnv/FI5fTi/PBlfwS4l0idwDkIw3PTk/s/qJbRGXXXr1eZFLWA== X-Google-Smtp-Source: AGHT+IFDkWTsNoL3eU9I8Uu1JnhOI/l/+UygD1nN4dlXSN/0peBnV6HtRg2gNSDhC8VnFI3q2nIbSMXl8S0hJ/OeGZGikFDiCT6M Precedence: bulk X-Mailing-List: linux-can@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4289:b0:657:4733:dde with SMTP id 006d021491bc7-65d0e94d6c4mr252189eaf.8.1766088745350; Thu, 18 Dec 2025 12:12:25 -0800 (PST) Date: Thu, 18 Dec 2025 12:12:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69446029.a70a0220.207337.00f1.GAE@google.com> Subject: [syzbot] [can?] INFO: task hung in cangw_pernet_exit_batch (5) From: syzbot To: linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, mkl@pengutronix.de, netdev@vger.kernel.org, socketcan@hartkopp.net, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 8f7aa3d3c732 Merge tag 'net-next-6.19' of git://git.kernel.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=175489b4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9e5198eaf003f1d1 dashboard link: https://syzkaller.appspot.com/bug?extid=6461a4c663b104fd1169 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=139e99c2580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/5fe312c4cf90/disk-8f7aa3d3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c7a1f54ef730/vmlinux-8f7aa3d3.xz kernel image: https://storage.googleapis.com/syzbot-assets/64a3779458bb/bzImage-8f7aa3d3.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6461a4c663b104fd1169@syzkaller.appspotmail.com INFO: task syz.0.17:6104 blocked for more than 148 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.17 state:D stack:25440 pid:6104 tgid:6104 ppid:5956 task_flags:0x400140 flags:0x00080002 Call Trace: context_switch kernel/sched/core.c:5256 [inline] __schedule+0x14bc/0x5000 kernel/sched/core.c:6863 __schedule_loop kernel/sched/core.c:6945 [inline] schedule+0x165/0x360 kernel/sched/core.c:6960 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017 __mutex_lock_common kernel/locking/mutex.c:692 [inline] __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776 cangw_pernet_exit_batch+0x20/0x90 net/can/gw.c:1288 ops_exit_list net/core/net_namespace.c:205 [inline] ops_undo_list+0x525/0x990 net/core/net_namespace.c:252 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup